Pneumatic valve.



. PATENTED APR. 28, 1908.

G; F. DUHRING. PNEUMATIC VALVE.

APPLICATION FILED SEPT. 12, 19067 I 'VENTOR Mai/1 J pf ia Atmnm WITNESSES;

, chest.

GUSTAV r. scheme, or cn'ANroan, NEW JERSEY.

PNEUMATIC VALVE.

Specification of Letters Patent.

Patented April 28, 1908.

Application filed September 12, 1966. Serial No. 334,340.

.as pipe organs, and has for'its objectto produce a valve of tl'ns class Winch shall be sun plc and ell'ective in its construction and operation and which, by using less material and occupying less space, decreases the cost of construction. j

The object of my invention is further to produce a construction which shall be especially convenient for inspection and repairs.

My invention. consists 1n providing a pneumatic channe board of any approved construction and in forming, preferably on the under side of said channel board, a wind chest, having a lower removable cover; in providing a novelty constructed valve having a passage through it which registers with 'assages in the pneumatic channel board cading to the organ pipes, and which passages are opened and closed by the movement of the movable valve disk from and to, a valve seat preferably attached to the lower removable cover of the valve chest.

I My invention consists further of other novelleatures to be hereinafter pointed out and described.

In the drawings accompanying and form ing a part of this specification, Figure 1 rep resents a transverse section through the wind chest and pneumatic channel-board provided with pneumatic valves embodying my invention; Fig. 2 is an enlarged section through a pneumatic valve; and Fig. 3 is a plan view of the same.

Numeral 1 represents a pipe channel board of any approved construction, having passages 2 therein which conduct air through the ports 3 to the pipes 4 from the wind chest 5. The wind chest 5 is separated from the pipe channel. board 1 by the pneumatic channel board 6 Which contains passages leading from the pipe channel board to the wind The comm unication between the Wind chest and these passages is controlled by the pi'ieumatic valve" or pallets 7 which. open from and close towards the valve seat 8, preferably secured to removable cover 9* Numeral 10 represents a key action of any approved construction, which when operatedas shown in Fig. 1opens communication between the passage 11 and the atmosphere, thereby permitting the pressure in said passage to drop to atmospheric pressure. Nhen the valves controlled. by the key action stand in their normal condition, cornmunica' tion. between passage 11 and the atmosphere is closed. and communication between said passage and a supply of air under pressure is established.

The pneumatic valve 7 constitutes one of the main features of my invention and it consists of a stationary block and movable disk connected therewith by a flexible diaphragm having a continuous passage through said dish and block. The block 1s preferably in the term of a ring 12 made of wood iiber or other suitable material. Thisring has a central opening 13, an annular groove 14 and one or more holes 15 drilled through the body ol said ring into said groove. The purpose of the annular groove 14 formed in the upper surface of the block 12 is to conduct the air from the hole 26 in the channel board to the holes 15 in the block 12. By forming the groove 1.4 in the block the care which Would otherwise be necessary to bring the holes in the'block into register with those in the wind chest is avoided. The disk 16 is preferably in the form of an annular ring made up of three layers; the up er layer 17 of fiber; the middle layer 18 of "re t; and the lower layer 19 ollcather. The block 12 is joined to the disk 16 by an outer flexible diaphragm 20 and an in nor flexible diaphragm .2l.,-so arranged as to form a chamber 22 between them ,which chamber communicates with the annular groove 14, through the holes 15 and which is out of comnnu'iication with the exterior, and the interior passage of the valve. The ring 12 is provided with clips 23 byineans of which it is secured to the lower surface of the action channel board so as to have the central opening 13 register with the passage leading through the pneumatic channel board to the pipe channel board and pipe.

The pneumatic channel board is provided with channels or passages 25 which communicate with the key action valves 10 and with the annular groove 14 in the valve through the holes 26. The valve seats 8 secured to the removable cover of the wind chest, are so arranged as to register with the disk of the valves. The screws .27 in the lower face of the pneumatic channel board engage the clips 23 and hold the valves in position. The removable cover 9 is provided with one or more bars 28 pivotally'sccured to the bot- ,the wind chest and in the chamber 32.

When the pipe is not speakingthat is when a key is not struekcommunication between passage 11 and the atmosphere is closed and between passage 11 and passage 32 is open. This will cause the )ressure of said passage to be exerted inside ot the chamber 22 and this pressure acting upon the diaphragms will extend the valve chamber 22 and cause thedisk 16 to engage the seat 8. Where the valves are placed in vertical position with the disk down, as shown, gravity will assist the action of closing. I

When communication between passage 11 and the atmospherev is open and between it and passage 32 closed, as shown in Fig. 1,

the-pressure in the chamber 22 will fall, and

the surrounding pressure in the wind chest will colla se the diaphragrns and cause the valve dis to rise from its seat as shown at 31, Fig. 1. As soon as the disk is lifted from its seat, ainwill be conducted through the center of the valve and the pipe channel board to the pipe and the pressure of the air inside of the valve-that is in the passage 13-will tend to collapse the inner diaphragm 21 and thus give added power for raisin the disk. When the valve is closed, as will be readily understood, the pressure in the interior space 7' of the va ve exerted on the diaphragm 21, is that of the atmosphere, because the pipes 4 are always open to the at mosphere. The val ves. ill not open until the difference in pressure between that of the wind chest and that of the atmosphere inside of the chamber 22 is sufficient for this purpose. When, however, they are once open a still greater effect is given and this insures the valve opening the proper distance romptly and without vibration.

When the valves have to be inspected, a mere turning of the bars 28 and rcmpval of the lower cover 9, renders them easily accessible and if the valves themselves are to be taken from the wind chest it is merely necessary to remove one of the screws 27.

By means of in novel arrangement the valves autoinatica 1y adjust themselves to 'their seats because of the flexible connection between the disk and the ring 13, and when 0 ened the passage for the an from the wind 53 est to the ipe channel board is straight and uniform or all valves.

2. ln a pneumatic valve the combination with a stationary member having an opening therein, of a movable disk having an opening therein, a conduit having flexible walls, joining said openings, and a C(JlltPSlifllG air chamber between said stationary member and said movable disk out ol communication with said conduit.

3. In a pneumatic valve the combination with a stationary member having an opening therein, a movable disk having an o ening therein, a flexible conduit joining salt openings, a flexible walled air chamberconnecting said stationary member and said movable disk, said stationary member having an open ing therein leading to said air chamber and out of communication with said. conduit.

4. An organ pallet consisting of a pair of rings joined by a pair of flexible imperforate connections surrounding the central. openings in said rings and separated from each other to form an air chamber between them, one of said rings being provided with an opening leading to said air chamber.

A pneumatic valve hearing. stationary and movable members each provided with openings, a flexible comicction joinii'ig said members,.said llexiblc connection being oi'- such shape as to form a through said valve in communication with said openings and a collapsible air chamber between said members out of communication with said passage. I

6. A pneumatic valve consisting of two relatively movable members, 0 ienings in said members and an annular collapsible air chamber composed of l'lexible walls connecting said members and 'snrrouinling said open mgs. 7. In organ the combination with a pneumatic valve consisting of two relatively movable members having openings therein, and a llexibl r walled air chamber connecting said relatively movable members and sur 'rounding said openings, of a channel board having an opening therein in communication with the openings in said members and means for securing one of said n'icinbcrs to said channel board.

8. In a pneumatic valve the combination with two relatively movable members each having an opening through it, of a pair of flexible irnpcrli'oratc diaphragnis connectingsaid members and surrounding said openings and arranged at a distance apart so as to form an air chamber between them. I

9. in an organ the combination with organ pipes, key controlled air ducts and a wind chest provide'dwith orts leading to the organ pipes and ports eading to the key controlled air ducts, of a neumatic valve in said ,wind chest consisting of a stationary member having an opening therethrough in communication with the port leading to the organ pipe and an opening in communication with said key controlled air duct, a movable valve disk having an opening therein, a flexible conduit connecting said vali e disk with said stationary member, a flexible walled air chamber surrounding said flexible conduit in open communication with said key controlled an duct and a valve seat in said wind chest adapted to be engaged by said valve disk.

, 10, In an organ the combination with organ pipes, key controlled air ducts and a Wind chest having openin s therein leading to the organ pipes and ho es therein leading to the keycontrolled air ducts of a valve-pallet having a central opening through it in communication with said or an pi e o ening and surrounded by an annu ar col apsi le air chamber in communication with said key controlled duct, a removable cover for said wind chest and a ,valve seat secured to said cover adapted to be engaged by said valvepallet.

In testimony whereof, I have signed my name to this specification in the presence/of twosubscribing witnesses.

' GUSTAV F. DOHRING.

Witnesses: ERNEST MILLER, C. M. WALES. 

